What does "backfeeding" mean in power systems?

• A. Feeding electricity into batteries for storage
• B. Feeding electricity back into the grid from a generator
• C. Routing power from one circuit to another
• D. Restoring power after an outage

Answer: (B)

Backfeeding in power systems refers to the practice of feeding electricity back into the grid from a generator. This typically occurs when distributed generation sources, such as solar panels or wind turbines, produce excess electricity that is not consumed on-site and can be sent back to the utility grid. This process is essential for managing energy supply and demand and helps integrate renewable energy sources into the overall electrical infrastructure.

When electricity is backfed into the grid, it can help stabilize grid frequency, provide additional power during peak periods, and even help reduce energy costs for homeowners or businesses generating their own energy. It's crucial to ensure that backfeeding is done safely and in compliance with regulations, as incorrect practices could lead to hazards for line workers or damage to the electrical system.

The other choices, while related to power systems, do not accurately capture the specific meaning of backfeeding. Feeding electricity into batteries focuses on storage rather than grid interaction; routing power from one circuit to another refers to internal electrical system management, and restoring power after an outage is about re-establishing supply rather than the action of sending power back into the grid.